package com.atguigu.gulimall.member.exception;

/**
 * Data time:2022/4/7 14:46
 * StudentID:2019112118
 * Author:hgw
 * Description: 用户名异常
 */
public class UserNameExistException extends RuntimeException{

    public UserNameExistException() {
        super("用户名已存在");
    }

}
